Larus cachinnans in the Netherlands

(last update: August 16, 2020)

Coordinator:
Albert de Jong
Merijn Loeve
Roland-Jan Buijs
Leon Kelder
Mars Muusse

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Caspian Gull cachinnans F|G 1CY, May - September 2020, Lelystad & Westkapelle, the Netherlands. Picture: Merijn Loeve & Tim Raats.

Blue tibis B-F|G and metal NLA Arnhem 5.552.929, ringed as pullus Larus cachinnans on May 21 2020 at nest 38 in Lelystad (Bataviahaven), Holland (NL 5230.00 N 525.00 E) - ringer Roland-Jan Buijs.
ID uncertain, one adult is Caspian Gull cachinnans. Female is cachinnans hybrid type, or with argenteus influences.

Recoveries:
29-07-2020 Lelystad (Oostvaardersdijk), Flevoland, NL 5.228,00 N 519,00 E colourring read Merijn Loeve
09-08-2020 Lelystad (Oostvaardersdijk), Flevoland, NL 5.228,00 N 519,00 E colourring read Eric Roeland
10-08-2020 Lelystad (Oostvaardersdijk), Flevoland, NL 5.228,00 N 519,00 E colourring read Eric Roeland
30-09-2020 Westkapelle (Zeedijk), Zeeland, NL 5.132,00 N 326,00 E colourring read Tim Raats

date: egg no: width (mm) length (mm)  
21-05-2020 pullus     Two pulli found, ringed b[F|G] & b[F|H]. Food: Round Goby, wrap of pork sausage. Both adults overhead alarming. Both unringed.
         
02-06-2020 pullus   Adult with at least one pullus at location.

Caspian Gull cachinnans F|G 1CY, September 30 2020, Westkapelle, the Netherlands. Picture: Tim Raats.

Caspian Gull cachinnans F|G 1CY, July 29 2020, Lelystad, the Netherlands. Picture: Merijn Loeve.

below: Caspian Gull cachinnans F|G 1CY, May 21 2020, Lelystad, the Netherlands. Picture: Merijn Loeve.